Edwin c



(No Model.)

HATHAWAY.-- REGENERATIVE LAMP.

No. 420,538. Patented Feb. 4, 1890'.

am vemitoz Em 0. Haihazwy, mtozmma N PETERS. PhuwlilhegliPher, Wflshinglon. U C- UNITED STATES" "PATENT OFFIGEQ EDXVIN O. HATHAlVAY, OF \VASI-IINGTON, DISTRICT OF COLUMBIA.

REG EN ERATIVE LAM P.

SPECIFICATION forming part of Letters Patent No. 420,538, dated February 4, 1890.

Application filed March 12, 1889. $e1ia1N0-302,966. (No model.)

T0 at whomiit may concern;

Be it known that I, EDWIN O. HATHAWAY, a citizen of the United States, residing at ashington, in the District of-Columbia, have invented certain new and useful Improvements in Regenerative Lamps; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawing, and to the letters of reference marked thereon, which form a part of this specification;

My invention relates to chandeliers or gaspendants, and the object is to provide a gasburner of this class which will heat the gas before it arrives at the point of combustion, whereby the gas and the particles of carbon held in suspension will be almost entirely consumed, thus producing a superior light and a saving of gas.

My invention further consists in means for arresting the heavier particles of carbon, so as to prevent their passage to the burner, whereby the burner might become partially or wholly stopped up and the flame caused to flicker or burn unevenly. v

My invention also consists in providing said pendant with an improved form of hood or shade, whereby any unconsumed particles of carbon that may be carried upward by the current of heated air from said burners will be arrested and prevented from reaching and soiling the ceiling, and whereby the heated current itself may be deflected and dissipated or so intermixed with the surrounding cooler air as to be prevented from reaching the ceiling at all, as will be hereinafter more fully described, and particularly pointed out in the claims. These objects I attain by the'construction shown in the accompanying drawing, which is a vertical elevation, partly in section, of my improved gas lamp.

A is an ordinary one-way plug-cock provided with a lever B, each arm of which has a chain a, by means of which the cock A may be operated to turn the gas off and on.

Attached to the cook A is a depending pipe 0,.which extends through and to within a couple of inches of the bottom of the metal globe D. This pipe O is provided with an orifice c at a point just inside the top of the globe, and this orifice is of a size, say, about one-third or one-half the internal area in cross section of the pipe itself. The bottom of the globe is provided with a pipe D ,which begins at a point about an inch from the inside of the bottom of said globe and terminates in a hollow spider E, from which radiate upwardly the tubes 6, provided with burnertips c.

The operation is as follows: The gas, being turned on through the cock A, flows downwardly and fills the globe D, and thence to the burners e, where it is consumed. As the 6 globe becomes heated from the flames of the burners it tends to expand or rarefy the gas in the globe, which then becomes unable to support the heavier carbon particles held in suspension, and they fall by gravity into the bottom of the globe, from whence they may be removed from time to time by unscrewing the pipe D. As the gas in the globe becomes heated. it naturally rises to the top, and" a portion of this heated gas is forced by the ex- 7 5 pansion out through the orifice c, where it mixes with the downward current of cooler gas and is carried with it downward into the globefand thence to the burners to be consumed. Of course it will thus be seen that So the amount of rarefied gas mixed with the downward current of cooler gas depends on the amount of heat received from the burners, and consequently the globe acts as a governor and regenerator, operating automati- 8 5 cally by the height of. the flame from the burners. The higher the flame the more the gas will regenerate.

Suitably secured to the pipe 0 above the globe and burners is an inverted-cone-shaped 9o reflector F, having a central wire-gauze hood G, and above this is a shade H.

I is an annular flange on the top of the re flector F. r

Ordinarily the heated current of air ascends vertically to the ceiling with sufficient force to carry with it particles of dust and dirt floating in the air with sufficient force to cause them to adhere or stick to the ceiling by imrious annoyance, especially in the case of plain white or finely-decorated ceilings.

The shade H, above described, may be of any opaque material; but if occasion require pact and thus disfigure it, which isa very se- 10o its upward tendency very materially checked,

so there Will not be suflicientforce of current to cause the dirt and dust to adhere to the ceiling. The heavier particles of dirt and dust set in motion by the current of heated air will strike against the shade H and fall upon the top of the. reflector F, where it is held by the flange I.

I laving thus described my invention, what I claim as new and useful, and desire to secure by Letters Patent of the United States, is-

1. lhe combination, in a gas-burner, of the globe D and pipe 0, extending into said globe and provided with orifice c, and the pipe D, having spider E, tubes 6, and burners e, as set forth.

2. The combination, with a gas burner, substantially as described, of the reflector F,

provided with gauze hood G and annular flange I, with the shade H, as and for the purpose set forth.

In testimony whereof I affix my signature in 1 presence of two witnesses.

EDWIN o. HATIIAWAY.

Witnesses:

DAVID C. I-IarnAWAY, M NAMEE- 

